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Finding the Fourth Proportional to 123,998.63, 171,117.68 and 67,409.60

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Solution

The fourth proportional to 123,998.63, 171,117.68 and 67,409.60 is: 93,025.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,998.63 : 171,117.68 = 67,409.60 : x
  2. Step 2: Convert to fraction form
    123,998.63/171,117.68 = 67,409.60/x
  3. Step 3: Cross multiply
    123,998.63x = 171,117.68 × 67,409.60
  4. Step 4: Simplify right side
    123,998.63x = 11,534,973,169.09
  5. Step 5: Solve for x
    x = 11,534,973,169.09/123,998.63
  6. Step 6: Final answer
    x = 93,025.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.